21IC.com is a Chinese website that focuses on electronic engineering. The website caters to a user base of Chinese electronic engineers who are looking for information on embedded systems, single-chip microcomputers, digital signal processing, electronic design automation, testing and measurement, components, medical electronics, and intelligent power grids.
The website has a clean and professional layout with a navy blue and white color scheme. The website's logo is prominently displayed on the top left side of the page alongside a search bar and several navigation links. Additionally, the website features a series of drop-down menus that enable users to access different pages and sections of the website with ease.
21IC.com is hosted by Hangzhou Alibaba Advertising Co., Ltd., and it has a domain authority value of 32 out of 100, according to Moz. The website is estimated to have 23,895 unique visitors per day, with users spending an average of 10 minutes and 36 seconds on the site. Its pageviews stand at 64,516.5, and it has an estimated site value of $1,130,040 in US dollars.
Being a website that provides engineering information, 21IC.com is not considered a family-friendly site.
When it comes to page speed, the website has a score of 53 out of 100 on PageSpeed Insights. This score puts the site in the average category, indicating that while some improvements can be made to improve the website's loading speed, the current state is satisfactory.
In conclusion, 21IC.com is an excellent website for Chinese electronics engineers. Its layout, content, and features make it easy to navigate and access information, and its pageviews and site value data point to a wide user base that finds the site helpful. However, there is room for improvement when it comes to page speed.
Domain | *.21ic.com |
Issuer Organization | DigiCert Inc |
Issuer | Encryption Everywhere DV TLS CA - G1 |
Algorithm | RSA-SHA256 |
Valid form | 01/29/2024 |
Expiration | 02/14/2025 |
Signed | Certificate is not self signed |
Additional Domains |
*.21ic.com 21ic.com |
Alexa Rank shows how popular 21ic.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If 21ic.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to 21ic.com and pageviews on 21ic.com over the past 3 months.
ASN ID: 37963
ASN Title: CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CNLast Update: 07/16/2024
% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS37888 - AS38911'
as-block: AS37888 - AS38911
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T06:04:16Z
source: APNIC
role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC
% Information related to 'AS37936 - AS37970'
as-block: AS37936 - AS37970
descr: CNNIC ASN block
country: CN
remarks: These AS numbers are further assigned by CNNIC
remarks: to CNNIC members and end-users in China
admin-c: IPAS1-AP
tech-c: IPAS1-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-CNNIC-AP
last-modified: 2008-09-04T06:40:26Z
source: APNIC
role: CNNIC IPAS CONFEDERATION
address: No.4, Zhongguancun No.4 South Street,
address: Haidian District, Beijing
country: CN
phone: +86-010-58813000
fax-no: +86-010-58813075
e-mail: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
nic-hdl: IPAS1-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-09-12T07:40:01Z
source: APNIC
% Information related to 'AS37963'
% Abuse contact for 'AS37963' is 'ipas@cnnic.cn'
aut-num: AS37963
as-name: CNNIC-ALIBABA-CN-NET-AP
descr: Hangzhou Alibaba Advertising Co.,Ltd.
descr: East Software Park, 99 Huaxing Rd.
descr: Hangzhou, China
country: CN
admin-c: ZM678-AP
tech-c: ZM877-AP
tech-c: ZM876-AP
tech-c: ZM875-AP
import: from AS4837
action pref=100;
accept ANY
import: from AS4134
action pref=100;
accept ANY
export: to AS4837
announce AS37963
export: to AS4134
announce AS37963
mnt-routes: MAINT-CNNIC-AP
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2013-07-24T02:44:02Z
source: APNIC
irt: IRT-CNNIC-CN
address: Beijing, China
e-mail: ipas@cnnic.cn
abuse-mailbox: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
auth: # Filtered
remarks: Please note that CNNIC is not an ISP and is not
remarks: empowered to investigate complaints of network abuse.
remarks: Please contact the tech-c or admin-c of the network.
mnt-by: MAINT-CNNIC-AP
last-modified: 2017-11-01T08:57:39Z
source: APNIC
person: Shuo Yu
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: shuo.yus@alibaba-inc.com
e-mail: shuo.yus@aliyun-inc.com
nic-hdl: ZM678-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2011-11-02T03:36:02Z
source: APNIC
person: Guoxin Gao
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: anti-spam@list.alibaba-inc.com
nic-hdl: ZM875-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2014-07-30T01:56:01Z
source: APNIC
person: security trouble
e-mail: cloud-cc-sqcloud@list.alibaba-inc.com
address: 5th,floor,Building D,the West Lake International Plaza of S&T,391#Wen’er Road
address: Hangzhou, Zhejiang, China
phone: +86-0571-85022600
country: CN
mnt-by: MAINT-CNNIC-AP
nic-hdl: ZM876-AP
last-modified: 2013-07-08T02:56:02Z
source: APNIC
person: Guowei Pan
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022088-30763
fax-no: +86-0571-85022600
e-mail: guowei.pangw@alibaba-inc.com
nic-hdl: ZM877-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-07-09T01:34:02Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)
Domain Name: 21IC.COM
Registry Domain ID: 17040411_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-01-04T07:34:20Z
Creation Date: 2000-01-10T02:41:29Z
Registry Expiry Date: 2026-01-10T02:41:29Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS1.HICHINA.COM
Name Server: DNS2.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-10T21:59:46Z
Host | A Record | TTL |
---|---|---|
21ic.com | 182.92.121.124 | 3600 |
Host | MX Record | Priority | TTL |
---|---|---|---|
21ic.com | mx2.qiye.aliyun.com | 10 | 600 |
21ic.com | mx3.qiye.aliyun.com | 15 | 600 |
21ic.com | mx1.qiye.aliyun.com | 5 | 600 |
Host | NS Record | TTL |
---|---|---|
21ic.com | dns2.hichina.com | 86400 |
21ic.com | dns1.hichina.com | 86400 |
Host | TXT Record | TTL |
---|---|---|
21ic.com | v=spf1 include:spf.qiye.aliyun.com -all | 600 |
dns1.hichina.com
TTL: 600
Email address: hostmaster.hichina.com
Serial: 2024082817
Refresh: 3600
Retry: 1200
Expire: 86400
Minimum: 600
Last tested: 02/01/2018
Total Resources | 164 |
Number of Hosts | 15 |
Static Resources | 125 |
JavaScript Resources | 26 |
CSS Resources | 4 |
Last tested: 05/30/2017
Total Resources | 43 |
Number of Hosts | 13 |
Static Resources | 23 |
JavaScript Resources | 19 |
CSS Resources | 1 |